Home / 65,811.42-98,717.05-21,438.10

Finding the Fourth Proportional to 65,811.42, 98,717.05 and 21,438.10

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Solution

The fourth proportional to 65,811.42, 98,717.05 and 21,438.10 is: 32,157.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,811.42 : 98,717.05 = 21,438.10 : x
  2. Step 2: Convert to fraction form
    65,811.42/98,717.05 = 21,438.10/x
  3. Step 3: Cross multiply
    65,811.42x = 98,717.05 × 21,438.10
  4. Step 4: Simplify right side
    65,811.42x = 2,116,306,139.80
  5. Step 5: Solve for x
    x = 2,116,306,139.80/65,811.42
  6. Step 6: Final answer
    x = 32,157.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.